Honeywell 05701-A-0405 Isolator Power Supply Unit Module Details
This module belongs to the Honeywell Zellweger (Sieger) System57 industrial gas monitoring control system. It is a 16-channel rack-mounted AC-DC isolated power supply unit, specifically designed to provide centralized power supply for the acquisition cards and relay cards within the entire gas detection cabinet. It is the core power supply component for the gas interlock system in hazardous areas of petrochemical and chemical industries.
I. Core Electrical Parameters
Input Specifications
AC compatibility: 85~264V AC, applicable frequency 47~440Hz;
DC compatibility: 110~340V DC, dual input adaptation for mains/industrial DC;
Base rated power: 50W, can be upgraded to 100W by adding the 05701-A-0440 expansion module.
Output and Isolation Design
Channel Configuration: 16 independent isolated 24VDC outputs, each channel corresponding to 1 gas detection sub-card power supply;
Isolation Performance: 500VDC electrical isolation between channels, between channels and the backplane, input and output withstand voltage 2.5kV AC (1min), eliminating channel crosstalk and grounding loop interference;
Built-in Protection: Overload, short circuit automatic recovery, over-temperature shutdown protection, panel equipped with power normal/fault/overload status indicator lights, supports remote monitoring of power conditions.
Physical and Environmental Indicators
Installation Specifications: 1U height, standard 19-inch full-width rack installation, compatible with System57 dedicated card cabinet; the small-sized model 05701-A-0406 is 8-channel semi-wide power supply;
Operating Temperature Range: Normal operation – 20℃~+60℃, storage and transportation temperature – 40℃~+85℃;
Humidity Compatibility: 5%~95% RH without condensation, overall protection grade IP20 (embedded in the cabinet);
Overall weight approximately 1.8kg, size 44×483×220mm (height × width × depth).
Core Functional Features
Multi-channel Independent Power Supply: 16 isolated circuits separately supply power to gas probe acquisition cards, single-channel failure will not affect the entire system, maintenance is safer;
Flexible Redundancy Expansion: Supports parallel connection of multiple units of the same model for redundant power supply, avoiding complete station gas monitoring failure due to single power failure; The basic 50W can be upgraded by the expansion module to increase the load limit;
Explosion-proof Compliance Certification: Holds ATEX, UL, CE industrial explosion-proof certifications, can be directly deployed in hazardous monitoring cabinets such as oil and gas stations, refining and chemical workshops;
Compatibility with Accessories: Specifically designed for System57 card-type racks, direct backplane connection, no additional wiring required, and native compatibility with system acquisition cards and alarm relay cards.
Distinction of Confusing Model Names (Key Pitfalls to Avoid)
There are two types of materials with the same serial number in the market, with completely different uses and cannot be mixed:
The power supply you queried (mainstream): System57 16-channel isolator power supply, responsible for the overall power supply;
DCS Digital Output Type: Same serial number 16-channel DO module, compatible with TDC3000 DCS system, controls solenoid valve switches, the hardware positioning of the two is different, purchase requires verification of rack model distinction.
Application Scenarios and Maintenance Procurement Tips
Typical Scenarios
Fixed-type online monitoring cabinets for combustible/toxic gases in petroleum refining plants, pharmaceutical workshops, and oil and gas filling stations, providing centralized power supply for the entire multi-channel gas acquisition and interlock alarm equipment.
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